John Thune

John Randolph Thune is an American politician and senior United States Senator from South Dakota, a member of the Republican Party. He previously served as a United States Representative for . He became South Dakota's senior senator with the retirement of Tim Johnson in 2015. He is the highest-ranking Republican senator from South Dakota, having served as the GOP's Chief Deputy Whip in 2006, chairman of the Republican Policy Committee in June 2009, and Republican Conference Chairman in 2011, the third-ranking position in the Senate. Wikipedia*